Assalamualaikum. Hello everyone ! We are here again to meet up and discuss about the ideas given from our members of group related to the digital electronic digit.
Here is the one of the ideas given.
TEMPERATURE CONTROL SYSTEM
The microcontroller communicates with a Dallas/Maxim "1-wire" digital temperature sensor
(in fully powered mode).
It has been successfully tested with DS18B20 and DS18S20 types.
The choice of sensor makes no difference to the temperature display resolution here. If a DS18S20
device is used,the software uses the "Count_remain" variable to increase it's resolution to 0.1 deg
centigrade.
The controller drives the three (high efficiency) LED single digit common cathode type display
segments through series 510ohm resistors to help limit the current to remain within the 25mA per
pin drive limit, together with the multiplexing action which effectively reduces the average current.
The multiplex is the same "Charliplexed" circuit as used in my previous project - this saves two pic
port pins for other uses. Using the on-chip oscillator again frees-up the two pins normally used for
connecting a crystal to be used as ports instead.
On the next post I will upload the others ideas that
might be usefull for this digit electronic
project.
Therefore don't miss it, stay tune on this blog ! :)
4 comments:
is it has the same function with air-conditioner??
it's is very good circuit that the people who stay in 4 season country is very suitable to use this product...people can know about the temperature outside the house..really good idea..congrate...
aiwa,i think the system use in air-conditioner almost same with this project because both depend on change of temperature.what u think?
well done everyone..you all success to access to comment here..I look that have many good comment. when you do some idea for a project. you all must ask you're group "why??" you all do choose this idea..that's really engineer..
Post a Comment